STM32F401CEU6

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32f401ceu6",
  "title": "STM32F401CEU6",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32f401ceu6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32F401CEU6",
    "manufacturer": "STMicroelectronics",
    "package": "UFQFPN-48(7x7)",
    "pin_count": 49,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586182476443602944",
    "parts": {
      "symbol": "stm32f401ceu6.kicad_sym",
      "footprint": "stm32f401ceu6.kicad_mod",
      "model_3d": "stm32f401ceu6-hero.glb",
      "model_3d_plain": "stm32f401ceu6.glb",
      "model_3d_step": "stm32f401ceu6-etched.step",
      "model_3d_step_plain": "stm32f401ceu6.step",
      "lbr": "stm32f401ceu6.lbr"
    },
    "distributor_links": {
      "lcsc": "C161736",
      "digikey": "497-17427-ND",
      "mouser": "511-STM32F401CEU6"
    },
    "distributor_check": {
      "checked_at": "2026-10-06T02:55:28Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-17427-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32F401CEU6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Battery supply voltage input, 1.7 V to 3.6 V, for RTC and backup power functions."
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "General-purpose I/O port C bit 13, 5V tolerant with 3 mA maximum current output for RTC functions."
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "General-purpose I/O port C bit 14, 5V tolerant, configurable as 32 kHz oscillator input (OSC32_IN)."
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "General-purpose I/O port C bit 15, 5V tolerant, configurable as 32 kHz oscillator output (OSC32_OUT)."
      },
      {
        "number": "5",
        "name": "PH0-OSC_IN",
        "type": "bidirectional",
        "description": "General-purpose I/O port H bit 0, 5V tolerant, configurable as 4-26 MHz crystal oscillator input (OSC_IN)."
      },
      {
        "number": "6",
        "name": "PH1-OSC_OUT",
        "type": "bidirectional",
        "description": "General-purpose I/O port H bit 1, 5V tolerant, configurable as 4-26 MHz crystal oscillator output (OSC_OUT)."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Reset input pin with embedded weak pull-up resistor (100 kΩ typical), active low logic level."
      },
      {
        "number": "8",
        "name": "VSSA/VREF-",
        "type": "power_in",
        "description": "Analog ground and negative reference voltage pin for ADC, voltage range -0.3 V to VDDA."
      },
      {
        "number": "9",
        "name": "VDDA/VREF+",
        "type": "power_in",
        "description": "Analog supply and positive reference voltage pin for ADC, 1.7 V to 3.6 V input range."
      },
      {
        "number": "10",
        "name": "PA0",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 0 with 5V tolerance, supports ADC1_IN0, USART2_CTS, and wake-up (WKUP) alternate functions."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 1 with 5V tolerance, supports ADC1_IN1 and USART2_RTS alternate functions."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 2 with 5V tolerance, supports ADC1_IN2 and USART2_TX alternate functions."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 3 with 5V tolerance, supports ADC1_IN3 and USART2_RX alternate functions."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 4 with 5V tolerance, supports ADC1_IN4, SPI1_NSS, and USART2_CK alternate functions."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 5 with 5V tolerance, supports ADC1_IN5 and SPI1_SCK alternate functions."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 6 with 5V tolerance, supports ADC1_IN6, SPI1_MISO, and TIM1_BKIN alternate functions."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 7 with 5V tolerance, supports ADC1_IN7, SPI1_MOSI, and TIM1_CH1N alternate functions."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 0 with 5V tolerance, supports ADC1_IN8 and TIM1_CH2N alternate functions."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 1 with 5V tolerance, supports ADC1_IN9 and TIM1_CH3N alternate functions."
      },
      {
        "number": "20",
        "name": "PB2",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 2 with 5V tolerance, supports BOOT1 alternate function for boot mode selection."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 10 with 5V tolerance, supports I2C2_SCL, SPI2_SCK/I2S2_CK, and TIM2_CH3 functions."
      },
      {
        "number": "22",
        "name": "VCAP1",
        "type": "power_in",
        "description": "Internal regulator output capacitor supply pin requiring 100 nF external capacitor for core voltage regulation."
      },
      {
        "number": "23",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin connection to device reference."
      },
      {
        "number": "24",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply voltage input, 1.7 V to 3.6 V."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 12 with 5V tolerance, supports I2C2_SMBA, SPI2_NSS/I2S2_WS, and TIM1_BKIN functions."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 13 with 5V tolerance, supports SPI2_SCK/I2S2_CK and TIM1_CH1N alternate functions."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 14 with 5V tolerance, supports SPI2_MISO, I2S2ext_SD, and TIM1_CH2N functions."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 15 with 5V tolerance, supports SPI2_MOSI/I2S2_SD and RTC_REFIN alternate functions."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 8 with 5V tolerance, supports I2C3_SCL, USART1_CK, TIM1_CH1, and MCO_1 alternate functions."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 9 with 5V tolerance, supports I2C3_SMBA, USART1_TX, TIM1_CH2, and OTG_FS_VBUS functions."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 10 with 5V tolerance, supports USART1_RX, TIM1_CH3, and OTG_FS_ID alternate functions."
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 11 with 5V tolerance, supports USART1_CTS, TIM1_CH4, and OTG_FS_DM alternate functions."
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 12 with 5V tolerance, supports USART1_RTS, TIM1_ETR, and OTG_FS_DP alternate functions."
      },
      {
        "number": "34",
        "name": "PA13",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 13 configurable as JTMS-SWDIO for serial wire debug (SWD) and JTAG test mode select interface."
      },
      {
        "number": "35",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin connection to device reference."
      },
      {
        "number": "36",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply voltage input, 1.7 V to 3.6 V."
      },
      {
        "number": "37",
        "name": "PA14",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 14 configurable as JTCK-SWCLK for debug clock and serial wire clock interface."
      },
      {
        "number": "38",
        "name": "PA15",
        "type": "bidirectional",
        "description": "General-purpose I/O port A bit 15 configurable as JTDI for JTAG test data input with SPI and timer alternate functions."
      },
      {
        "number": "39",
        "name": "PB3",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 3 configurable as JTDO-SWO for JTAG test data output and serial wire output with SPI and I2C functions."
      },
      {
        "number": "40",
        "name": "PB4",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 4 configurable as NJTRST for JTAG reset with SPI, I2C, and timer alternate functions."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 5 with 5V tolerance, supports SPI1_MOSI, SPI3_MOSI/I2S3_SD, and I2C1_SMBA functions."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 6 with 5V tolerance, supports I2C1_SCL, USART1_TX, and TIM4_CH1 alternate functions."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 7 with 5V tolerance, supports I2C1_SDA, USART1_RX, and TIM4_CH2 alternate functions."
      },
      {
        "number": "44",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot select input pin for choosing between main flash memory and system bootloader execution at device reset."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 8 with 5V tolerance, supports I2C1_SCL, TIM4_CH3, TIM10_CH1, and SDIO_D4 functions."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 9 with 5V tolerance, supports I2C1_SDA, SPI2_NSS/I2S2_WS, TIM4_CH4, and SDIO_D5 functions."
      },
      {
        "number": "47",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin connection to device reference."
      },
      {
        "number": "48",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply voltage input, 1.7 V to 3.6 V."
      },
      {
        "number": "49",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: PC13, PC14, and PC15 have reduced current capability (3 mA maximum) due to power domain implementati; VREF+ and VREF- (pins 8 and 9) appear as combined designations (VDDA/VREF+ and VSSA/VREF-) indicatin; PA13 and PA14 are shared with JTAG/SWD debug interface pins (JTMS-SWDIO and JTCK-SWCLK) - their func",
          "exposed pad 49 added from the footprint"
        ],
        "pages_sent": 49,
        "cost_usd": 0.3823,
        "at": "2026-10-06T02:55:09"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586182476443602944",
        "pages": 135,
        "sha256": "7daad2163948dcbe",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "UFQFPN-48(7x7)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "49"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stm32f401ceu6"
  ],
  "discovery_pitch": "STM32F401CEU6 (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32f401ceu6.kicad_sym",
    "stm32f401ceu6.kicad_mod",
    "stm32f401ceu6.glb",
    "stm32f401ceu6.step",
    "stm32f401ceu6.lbr",
    "docs/hero.png",
    "docs/stm32f401ceu6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm32f401ceu6-hero.glb",
    "stm32f401ceu6-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}